.box1{
    width: 150px;
    height: 150px;
    background: url("../imgs/1.jpg") no-repeat center;
    background-size: cover;
}
.box1:hover {
    transform: scale3d(1.3,1.3,1);
}

.box2{
    width: 150px;
    height: 150px;
    background: url("../imgs/2.png") no-repeat center;
    background-size: cover;
}